Light diffuser



FIG. 1 is a top perspective of a light diffuser showing the new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a side elevation view thereof.

The portions of the light diffuser shown in broken lines form no part of the claim. 

CLAIM The ornamental design for a light diffuser, as shown and described. 